<!doctype html> 
<html> 
<head> 
    <meta charset="utf-8"> 
    <title></title> 
</head>
<body>

<script type="text/javascript">
	function show(){
		return function (){
			alert(1);
		}
	};
	//function show(){
	//	return function (){
	//		alert(1);
	//	}
	//};
	show();
	//alert(show());

</script>
</body>

</html>